... UV Vis Spectrophotometer, Visible Spectrophotometer, Flame Photometer, Whiteness Meter, Turbidity Meter, Colorimeter, Gloss Meter, Tintometer, Automatic Polarimeter, Auto Melting Point Apparatus, Automatic ... and scratches, free for clean and durable;² High brightness LED lights, with long service life;² Extremely large storage capacity ... ;1.3000-1.7000nD; External USB and RS232;LED lights;)